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Influence of Fuel Properties on Mixture Formation: An Experimental Analysis for High Pressure Swirl Injectors 2000-01-2863

The linear Raman scattering has been applied for the investigation of the influence of fuel properties on the mixture formation of high pressure swirl injectors. The measurements have been performed in an optically accessible high pressure high temperature chamber with a multi-component fuel consisting of benzene and n-decane. The local air/fuel-ratio and the composition of the fuel vapor phase were detected simultaneously with high spatial and local resolution along a line inside the spray region of the injector. In addition to the measurements performed with this two-component fuel mixture formation of the injector has also been studied by the separate use of the fuel components alone. Furthermore the influence of injector cooling on mixture formation has been investigated.